Question

Switches of the electrical appliances are connected in the ___ wire?
A. Neutral
B. Live
C. Earth
D. All

Answer 1

Hint: There are three wires that are connected to the electrical supply. Those wires are live wire, neutral wire and earth wire. To help monitor the voltage, neutral wires transport current to the power source, live wire is directly connected to the power supply, and earth wire is used as a safety purpose in case of unseen circumstances.

Complete answer:
A plug contains three wires as follows:
Live wire: The live wire is also known as the phase wire. The live wire is directly connected to the generators of the current supply. The main fuse of the circuit supply is connected to the live wire and the switches as well.

Neutral wire: The neutral wire completes the circuit and is the return wire and it connects the appliance to the terminal of the source of electric supply which is earthed. The neutral wire is at approximately 0 V. The main switch is connected to the live and neutral wires.

Earth wire: The Earth wire does not carry current. It is a safety wire and connects the metal case of the appliance to the Earth. Due to unseen circumstances, if something in the appliance goes wrong, or it is wired incorrectly, then the Earth wire may also carry the same current as the live wire.

Therefore, we can say that the switches of the electrical appliances are connected in the Live wire. So, option (B) is correct.

Note: If a fault occurs due to unseen circumstances where the live wire is connected, then the earth wire allows a large current to flow through the live and earth wires. Due to this, the fuse overheats and melts and breaks the circuit. So we should never touch this wire because if one accidently touches this wire, we may receive an electric shock which might be fatal and can cause death.